Carbureter.



PATBNTED 12123.19. 1907.

M. D. GOLBATH.

CARBURETER.

APPLIUATION FILED MAY 18,' 1906.

2 SHEETS-SHEET 1.

/NVEA/Ta l Mama-Cm im PATBNTBD FEB. 19, 1907.

M. D. Icommu. CARBURETER. APPLIoA'rIoN FILED MAY 18,1906.

2 SHEETS-SHEET 2.

MONROE D. COLBATH, OF H AMPDEN, MAINE.t

`CARBURETER.

Specification of Letters Patent.

Application filed May 18, 1906. SerialNo. 317,645.

T0 a/ZZ whom it may concern:

Be it'known that I, MONROE D. CoLBATn, a citizenof the United States, residing at Hampden, in the county of Penobscot and State of Maine, have invented certain new and useful Improvements in Carbureters, of

'which the following is a specification.

This invention has relation to carburetersl and relates in particular to carbureters of that class in which a gasis produced by what is known as the cold process.

lu carbureters of this class as ordinarily constructed it has heretofore been found difficult to deliver the hydrocarbon li uid to the carbureter automatically, and w ien so delivered to hold the hydrocarbon liquid suspendedin a partiall -divided state in a position above the level of the body of liquid hydrocarbon in the carbureter long enough for the incoming air to engage and become saturated with the ydivided hydrocarbon.

Another diiculty that has been encountered in coldeprocess carbureters of the ordinary construction is .in storing a suiiicient quantit of air for a; sufficient period of time to equa ize the temperaturebetween the air and the hydrocarbon.

A still further difficulty encountered in carbureters as heretofore constructedis that the ra id evaporation of the hydrocarbon liquid has the effect of greatly lowering the tem erature of such liquid, and hence has pro uced. a very considerable diierence in temperature bet-wee 'theliquid and the air supplied to the carbureter.

H aving in view the obviating of the abovementioned difficulties encountered in thev practicing of the cold-process method of carbureting by the apparatus ordinarily employed, my invention has for its object, first, Y

the provision of novel automatic feeding devices; secondly, the provision of novel means for holding the hydrocarbon liquid in suspension so as to facilitate the saturation of the air; thirdly, the provision of novel means for agitating the liquid hydrocarbon contained in the carbureter, so as to facilitate the absorption of a relatively large amount of hydrocarbon vapor by the air supplied to the apparatus, novel means for constantly maintaining the air supplied'to the apparatus and the hydrocarbon at substantially the same temperature during the operation of the apparatus.

Other-objects of the mventionwill be del veloped during the courseof the specific de-m tank being adapted Iinlet pipe 4.`

and, fourthly, the provision of" scription of the construction of my improvement. y

My invention, having the aboveobjectsin view, consists' in the novel constructions, combinations, and arrangements of parts hereinafter described and claimed.

In the accompanying drawings, illustrating my improvements, and in `the-several views of which like numerals designate corresponding parts, Figure 1 isa vertical sectional view of a carbureting apparatus constructed in accordance. with my invention. Fig. 2 is a vertical sectional view, on an enlarged scale, of 4an automatically-operated valve which I employ for governing thesupply of hydrocarbon liquid to the apparatus shown in Fig. 1. Fig. 3 is a top plan view of a carbureting-screen employed in the carbureter shown in Fig. 1. Fig. 4 is a fragmentary detail sectional view of a portion of the carbureting-screen on an enlarged scale,

and Fig. 5 is a horizontal'sectional view taken on the line 5.-5. of Fig. 1.

The outer casing of the carbureter is preferably in the form of a circular tank 1 which is provided with a top 2 and bottom 3, this to be buried in the ground, as is customary, and being provided with an air-inlet pipe 4, W 'ch extends above the surface of the ground and is adapted to be connected to any suitable air-forcing apparatus. The pipe 4 leads into a chamber 5 which is formed by a concave-convex band or ring of sheet metal 6, that completely surrounds the tank 1 and'is riveted thereto at its' upper and lower edges, as shown at 6. 6 An exhaust-pipe 7 leadsfrom the air-cham ber 5 to a point above thel surface of the ground, said exhaust-pipe ybeing provided for the purpose of exhausting any water thatmay be lodged in the chamber 5 as the result of condensationof moisture from the air brought into the chamber 5 through the air- A pluralit of air-nozzles 8 8 are arranged in the wall o -the tank 1 and serve to convey air from thechamber 5 to Within the tank,

Patentedreb. 19,1907. v

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these nozzles being of tapering form and extending downwardl and tangentially. to the sidewall of the ta therethrough will be directed in a downward direction and tangentially to the inner wal-1 of the tank, as clearly illustrated by the arrows in Figs. 1 anfd'j of the drawings.

Within the tankl4 andcentrallythereof is .located a float 9, this float being preferably so that the air coming' IOS IIO

provided with a plurality of tangential wings or vanes 10, which serve,as will be presently described, toimpart rotary Inovenientto the ioat 9 by the limpact of the incoming air l.through the nozzles 8. `The float 9 is provided with a central tube 11 and a post 12, which is screwed into the bottom 3 of, the tank 1, extends upwardly into the tube 11, and'serv'es to maintain the float centrally in the tank and to guide the float in its vertical movements, the post being of such size relative] to the tube 11 as to permit of free longitu al movement of the tubev upon the ost. y. p Within the case 1 and above the iloat 9 is arranged a concave-convex porous diaphragm or partition, whiph serves to temporarily suspend the incoming hydrocarbon above the level of the liquid hydrocarbon in the tank. This diaphragm or partition is of concave-convex form and is constructed as follows:

A plurality of radially-disposed arms 13 are formed with depending outer ends 13', and these depending outer ends bear against the inner surface ofla ring 14 and are riveted thereto and to the wall of the tank 1 by rivets 15, which pass through the depending ends of the arms and through the ring and the wall of the tank. The inner ends of the arms 13 are connected to a metallic ring 16, which has a iiange 17 around' its outer edgel and a somewhat higher flange 18 around its inner edge, the latter flange being formed with a laterally-extending flange 19 at its upper edge thatserves as alseat'for a cap or cover 20, that is bolted to said flange 19, a disk-21 of burlap being disposed'belowthe cover 20 and interposed between the end of the cover and the flange 19. The cover 20 is formed with an integral sleeve 21 at' its center, which servesto guide a ro'd 22, that is screw-threaded at its lower endand screws into aplug 22', which is in turn screwed into the tube 11 in the center of the float 9.

The upper end of the rod 22 is provided with a screw-thread and carries two threaded sleeves, (designated, respectively, 23 23',) these sleevesbeing adjustable o nthe rod for the purposehereinbelow described.A

' The arms' 13 are curved, `4as shown, and serve to support a section of foraniinous metallic material 24, preferably brass wiregauze of fine mesh, andon top of said forann`- nous material is arranged a sheet of porous' material of suitable texture, preferably burlap. The inner edge of the wire-gauze section 24 extends upwardly and alongside the outer wall 17 'of the' ringl 16, and. the inner edge of the burlap25 extends 'over and down on the inside of the outer wall 1,7 of said'ring 16, the outer wall 17 and the inner wall` 18 oi' disk 41,"Inounted/in the l passes through an opening 42 -in a disk 43,

ratan, and is retained in position at its inner edge within the canal'26 by a similar but smaller ring of wire or ratan 28.

The tank .-1 is provided with an exhaustpipe 29, which extends through the top of the tank and above the surface of the ground and extends to near the bottom 3 ofthe tank,

'this pipe being provided for the purpose of exhausting the liquid hydrocarbon from the tank when desired or for 4exhausting any water that might accumulate in the bottom of the tank, and the tank is also provided with a centrally-disposed pipe 30, which has a bell-mouth 31 on its lower end, this'latter pipe being provided for the purpose of conveying away the gas or ignitible vapor lformed by the union of the air with the vapor vof 'the hydrocarbon, said pipe 3() leadlng tol polnts ol" consumption and being of l' the usual construction.

Liquid hydrocarbon lis supplied to the:

tank 1 bymeans oi a hydrocarbon-inlet pipe '31', which extends throughfthe wall of the.`

tank 1 and is connected at its inner end to a head 32, this head forming a portion of a valvecasing 33, and the head also receiving a rod 34, that serves in connection with the pipe 31 to maintain the head in iixed position, the rod 34'being preferably attachedfat its outer.` end and, as shown at 35, to thewall ofthe tank 1.

The construction of the valve will be best understood by an examination of Fig. 2 of the drawings, to which figure I will now refer. The casing 33 of the valve screws into the head 32 and terminates in a diminished lower end 34', the juncture of the diminished end 34 and the casing 33 forming a coneshaped seat 35,' for a valve 36, which has a depending stem 37- and an 'upwardly-extending spindle 38', which spindle works Jl'reely in an opening 39 in the lower wall ofthe head 32 and passes through, an vopening 40 in a casing 33, and also also located in the casing 33. The casing 33 is provided with a .boss 44, into which is screwed a curved arm 45, 'that serves to support a lever 46', having a Weight 47 at its end that bears against the lower end of the de'- pending stern 37 ofthe valve 36 and is pivoted at, 48 to thesaid-arm 45. The opposite end of the `lever 46 isslotted, as shown at 49, and constitutes. a' yoke through which the rod 22 passes, the threaded'sleeves 23 23v bearing, respectively, on thetop and bottom of this yoke and serving as a mea-nsfer connecting the rod A2,2 to the lever 46. 'The IIO IIS

IIS

sleeves 23 23 are when in proper position spaced a sli ht distance apart, so vas to permit of a slig t movement of the yoke of the lever'46 between these sleeves and so that the lever can be swung on its pivotal point by the upwardFand-downward movement of the rod 22. A spiral spring 50 is arrangedbe-` tween the disks 41 and 43 and is secured at its ends to these disks, this spring serving to normalry close the valve 36.

The parts constructed and arranged as above described are operated in the following manner: When the apparatus is irst placed in use, suiiicient quantity of hydrocarbon liquid is supplied through the pipe 31 and the valve-casing 33 (the valve 36 being at this time opened by the weight of the float 9) to 'prime the apparatus. When a sufficient quantity of hydrocarbon has been supplied to partly fill the tank, air is forced in through the pipe 4 and is injected into thetank belowk the level of the hydrocarbon liquid and throu h the nozzles 8. `,The air coming into te tank through the nozzles 8 imparts a rotary movement to the iloat 9, which has the effect of agt'atinggtheliquidhydrocarbon 'surrounding the tioat andofdispersing the incoming air throughoutA the liquid hydrocarbon. The hydrocarbon coming in throu hpipe 31,and the valve-casing 33 falls into t e canal 26 and is carried ever the outer wall of the canal by the capillary action of the burlap 2'5 and is held in suspension by the "burlap and by the wire-gauze cover 24:`

The air eriod of time. v

the liquid hydrocarbon in the bottom of t e tank passes upwardly through the vwire-gauze 24 and the burl'ap'25 and causes a rapidevaporation of the hydro'- carbon whichis-heldin suspension and -a thorough saturation of the air with hydrocarbon vapor, and the resulting vapor or gas escapes through the pipe 30 and iseonveyed by means of said ipe, to points of consuinption.

for a considerable after passing v-throu When the liquid hydrocarbon in the tank has acquireda predetermined level', which is regulated by the adjustment of the sleeves .-23 23 the rising of the iioat 9 allows the valve 36't0descend and rest' on its seat 3,5 under the action .of the sprin 50, thus closing off the supply of hydrocar on tothe tank. As the hydrocarbon becomes exhausted by the continuation of the carbureting process the float falls, and the falling of the float operates, through the lever 46, to o en the valve, and thus provides arenewal ci) the supply ofhydrocarbon, and this automatic operation is continued indefinitely.

The storage of air in air-chamber 5 produces an equalization v of temperature between the incoming air and the hydrocarbon liquid contained in the tank, andthe rotation of the float in the manner hereinbefore de scribed has the eii'ect of spraying the liquid hydrocarbon, which gauze 24 on top of the float, and thus ca'uses a comniingling of the air withaportion of -hydrocarbon vapor bei'ore the air reaches the foraminous partition formed bv 'the wiregauze 24 and the burlap 25 and also serves toequalize the temperature of the air and the hydrocarbon vapor, so that the evil eects which would be produced by the lowering olf 'temperature due to evaporation are obviateu. l

1. In carbureting apparatus the combina# tion of a tank, a foraminous partition disposed in the tank above the bottom thereof, a rotary ioat arranged in the -tank below said partition, a hydrocarbonlinlet pipe, -a valve on vsaid pipe operativelvco'nnecte to said float, an air-inlet pipe-and. means whereby the iioat will be rotated by air.; entering t-he tank through said aireinlet piper 2. In a carbureter, the combination with a tankliaving an air-chamber surrounding the I same, of a l'oram'inous partition arranged in said tank and a canal arranged` above said partition, arotary iloat arranged inthe tank belowsaid partition `and said oatx'i'having f wings on its periphery, a hydrocarbon-inlet pipe, a valve oii said pipe located-abovethe canal on said dpartition and operatively con-t nected to sai float, vand a seriesfofnozzles leading downwardly from the'air-cha'inber ofthe tank and' tangentially tothe axial center oi' said iio'at. v l

` 3. vIn a carbureter, the combination with a' y tank,and-a hydrocarbon-inletA pipe'. leading into said tank, of .ranged in the tank, a valve on said inlet-pipe, la rotary float arranged inthe. tank'belovrdsaid partition, and adapted to operate said valve, and means for rotating said float.

4. In a carburetor lthe combination'with a tank, of a forarninous partition arranged in the tank and having a canal on its upper surface, a hydrocarbon-supply pipe leadinginto' the tank and discharging intov said canal., fibrous material covering; said partition'and dipping into said canal arid an air-inlet lead'-v ing into the tank bellow said partition.

5. In a carbureter the combination with a tank, a hydrocarbon-inlet pipe leading into said tank, an outlet-pipe leading from the tank, an air-chamber surrounding a portion of the tank, of a foraininous partition arranged'in the tank, an air-inlet pipe lea-ding into said air-chamber, nozzles leadingjdowne wardly from the air-chamberinto the tank,a rotary float having wings on its periphery,

- and a valve cari ied by the hydrocarbon-inlet drips from the wire TEnENcE IB. 'TowLn I Q0A a foraminous partition ari 

